Hollow fiber membrane stretching equipment and stretching method

Abstract

The invention relates to the field of hollow fiber membrane manufacturing, in particular to hollow fiber membrane stretching equipment and a stretching method. The stretching equipment comprises a stretching mechanism, an unwinding mechanism arranged on the right side of the stretching mechanism and a winding mechanism arranged on the left side of the stretching mechanism. A heating oven covers the outer part of the stretching mechanism; the stretching mechanism comprises a guide rail and a clamping mechanism arranged on the guide rail, and the clamping mechanism moves along the guide rail; the guide rail comprises two rails which are symmetrically arranged, the guide rail comprises a stretching section, and the distance between the two rails in the stretching section is gradually increased from right to left. The stretching method comprises the steps of weaving fiber membrane protofilaments into fiber membrane cloth, coating process edges of the fiber membrane cloth into a whole, stretching the fiber membrane cloth, performing heat treatment and shaping and the like. According to the method, the fiber membrane protofilaments are woven into the fiber membrane cloth and then stretched on the stretching equipment, uniform stretching of the fiber membrane is achieved through sectional stretching and partitioned heating, and the problem that the fiber membrane protofilaments are prone to being damaged due to weaving and finishing after stretching is solved.

Description

technical field [0001] The invention relates to the field of hollow fiber membrane manufacturing, in particular to a hollow fiber membrane stretching device and a stretching method. Background technique [0002] Hollow fiber membrane is a separation membrane of selectively permeable hollow fiber with micropores in the fiber wall, and its micropore size is on the order of nanometers to micrometers. At present, in the production and manufacturing process of hollow fiber membranes on the market, box-type stretching machines are mainly used to stretch them step by step, which has the following technical problems: a single membrane filament cannot be stretched continuously, post-processing is difficult, material waste is large, Low efficiency, high energy consumption, and uneven stretching thickness of the membrane filaments, etc., and the weaving and finishing process after stretching can easily cause damage to the membrane filaments. Contents of the invention [0003] The pu...

AI Technical Summary

Problems solved by technology

At present, in the production and manufacturing process of hollow fiber membranes on the market, box-type stretching machines are mainly used to stretch them step by step, which has the following technical problems: a single membrane filament cannot be stretched continuously, post-processing is difficult, material waste is large, Low efficiency, high energy consumption, and uneven stretching thickness of the membrane filaments, etc., and the weaving and finishing process after stretching is easy to cause damage to the membrane filaments

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